Arch-brick.



vJ. P. NEFF.

ARCH BRICK.

IIIIIIIIIIIIIIIIII PT.14, 1911.

. n Patented De0.3,1912.

NNNNNN 0H entran sfrarns PATENT ernten.

JOHN P. NEFF, or NEW YORK, N. Y., AssmNoR ro AMERICAN- AECH COMPANY, 0E

NEW YORK, N. Y., a coRPoEATIoN or NEW YORK.

ARCH-BRICK.

Specification of Letters Patent.

' Patented neas, 1912.

Application led September 14, 1911. Serial No. 649,218.

To all whom it may concern:

Be it known that l, JOHN P. NEFF, a

o 'which the following is a. specifi- `^mention has reference to an imp zot construction et arch brick designed particularly :tor use in positions in boilers where the lower or inner edge ot' the brickis supported from a tube or equivalent supporting means and the opposite or4 outer and upper side ot the brick rests against a sido sheet or inner wall of the fire box.

rihe object of this improvement is. to avoid an accumulation of cinders or sla on the upper side ot the brick next to the s eet where such accumulation would be objectionable or injurious, and also 'to arrange the construction so that as small an amount of the brick will touch the sidesheet as is possible while still aording a good secure support.

A still further object of this invention is the provision of a brick of such a character that it can be changed in configuration at its upper or 'cuter side so as to lit tubes which are located at various different angles with the side sheet and seldom exactly parallel with the latter, and still provide a secure bearing and support for the brick, and also to provide means whereby, if desired, additional clearance past the outer edge of the brick may be obtained between the brick and the side sheet so as to regulate the air space between the arch and the side sheet and permit just as much air to pass up between y the side sheet and the bricle as may be desii-ed. v Y

ln the drawing illustrating my improvenient, l have shown in Figure l a plan view or my improved brick, in Fig. 2, l have shown an inverted or bottom plan View, and in Fig. 3 l have illustrated the end view'of the brick showing the same in position between the supporting tube andthe sheet.

vReferring now more particularly to Fig.

it 'will be seen that the brick 4 is therein carried upon a tube 5 its lower side or edge rc1-ft ing upon the lug 6 and inclining in an upwardly direction to a point 7 where it bears against the side sheet 8. The'point 7,

as sho-wn, is adjacent the upper face of the brick, the cut-away part or clearance indicated at 9 being upon the under side, so that there will not be a pocket formed on top for the lodgment of cinders or slag which would be injurious to the side sheet.

From examination of Figure i it will be seen that on the inner side ofthe central point of the brickmarked l in this gure, the side of the` brick adjacent the central point is beveled od or inclined as indicated' at i0', and by this means it is possible to set the brick in place without di'liiculty throughout quite a dii'ierent range of angles of the supporting tube. This beveling gives a onepoint bearing at. the end et the bri-ck, with a minimum amount of clearance between the sides l0 and the sheet. lit, however, it becomes necessary to set the brick in a place where a still greater angle than is provided or by the inclination l0 is required, the brick can be readily adapted to such greater angle by simply breaking or chipping off some of the inner part marked 1l, which, on account of its being materially thinner' than the balance of the brick, can be readily broken away to any'extent desired to :titl such greater angle. lf it be desired to leave a predetermined amount of air space between the outer edge of the brick and the side sheet 8, the thinner'part l1 can also be broken away, even back to the point marked l2 on Fig. 2, this provision of the wings or thinner portion il. extending in a kind of triangular shape to the central part at 7 making it possible toget any extent of angularity desired without injuringor intertering with thevmain or body portion of the brick at ali.- rEhe engagement of the wing adjacent the upper edge of the brick with the clearance space below reduces the tendency of the brick to wedge tightly into place.

ln orderl to get the desired strength and material adjacent the thinner wings or pro- 'ections 11, l also provide the thickened walls or ribs indicated at 13 in Fig. 2.

Having thus described my invention and illustrated its use, .what I claim as new and desire to secure "by'Letters Patent isthe following: i

1. A furnace arch brick having a supporting socket at one end and at the other end comprising two surfaces inclined from the edge of the brick to a central meeting point and adapted to engage a side sheet at such tml meetin point, the end of the brick having the inc ined surfaces being relatively of less thickness than the body of the brick.

2. A furnace arch brick adapted to enga e a supporting tube at one end, and at t 'e other end comprisin two surfaces inclined from the edge of the rick to a 'central meeting point, and adapted to engage a side sheet at such meeting point, the end of the brick having lthe inclined surfaces being vrelatively thin fiscompared with `the body 'of the brick.

3. A furnace arch brick having a supporting socket at its inner end' and having itsouter end cutaway upon thelower 'side to' provide a relatively thin wing at the upper side of the brick adapted to engage the firebox side sheet, the brick being out of contact with the side sheet beneath such Wing,

and the said wing being cut away atthe y sides, so that it' engages the side sheet only at'the central portion of the wing.

4. An improved arch brick having a body portion adapted to engage a supporting tube at its inner end and having its outer end cut away upon the lower side to rovide a relativel thin wing at the upper slde of the brick a apted to engage the firebox side sheet, the brick being out of Contact with the side sheet beneath such wing, and the said wing being 'cut away at the sides, so that it engages the side sheet only at the central portion of thewing.

Kiln testimony"' wheeof I have hereunto.

signed my name Ain the presence of the two subscribed witnesses.

JOHN l. NEFF. Witnesses:

E. N. PARKER, CLARA G. MILLER. 

